According to Fowler, Isaac's mother is reportedly suffering from complications related to hearing-loss surgery. Thus, Isaac could be a likely candidate for a hardship waiver that would make him immediately eligible for Michigan, but that would have to be approved by the NCAA.

Isaac was a five-star recruit and the No. 4 running back in the class of 2013, according to Rivals.com, when he signed with USC. He recorded 40 carries for 236 yards and scored two touchdowns during his freshman campaign in Los Angeles last season.

If Isaac is ruled eligible for the 2014 season, he would join a Michigan backfield that loses leading rusher Fitzgerald Toussaint and possesses an offensive line that struggled last year. Sophomore running backs Derrick Green and De'Veon Smith are the go-to players at that position heading into the fall, so Isaac could add a boost of talent to a Wolverines squad that averaged only 3.28 yards per carry in 2013.